The spoken word is immediate but lacks permanence.
口头之言便捷，但缺乏持久性。
《牛津词典》
2
Much of the world's great architecture has been constructed of stone because of its beauty, permanence, and availability.
世界上许多伟大的建筑都是用石头建造的，因为它美观、持久且容易找到。
3
When new or difficult material is presented, almost all listeners are faced with a challenge, because human's speech lacks the stability and permanence of the printed word.